KR20150101081A - Laser apparatus able to output multiple beams - Google Patents
Laser apparatus able to output multiple beams Download PDFInfo
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- KR20150101081A KR20150101081A KR1020140022293A KR20140022293A KR20150101081A KR 20150101081 A KR20150101081 A KR 20150101081A KR 1020140022293 A KR1020140022293 A KR 1020140022293A KR 20140022293 A KR20140022293 A KR 20140022293A KR 20150101081 A KR20150101081 A KR 20150101081A
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- laser
- resonator
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- laser beam
- outputting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08018—Mode suppression
- H01S3/08022—Longitudinal modes
- H01S3/08027—Longitudinal modes by a filter, e.g. a Fabry-Perot filter is used for wavelength setting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
- H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression
- H01S3/0823—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression incorporating a dispersive element, e.g. a prism for wavelength selection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0912—Electronics or drivers for the pump source, i.e. details of drivers or circuitry specific for laser pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
- H01S5/02212—Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Lasers (AREA)
Abstract
The present invention relates to a laser device, and is configured to output a plurality of laser beams having different wavelengths by using one diode pumping light source and a different kind of laser medium, so that laser beams having different wavelengths can be used simultaneously or selectively And to provide a laser device capable of reducing the device cost. In order to achieve the above object, there is provided a pumping light source for pumping light to generate and output pump light; A first resonator using a first laser medium and generating and outputting a first laser beam by resonating pump light applied from the pumping light source; A beam splitting unit for outputting a part of the first laser beam outputted from the first resonator to the final output beam and outputting the remaining part as pump light for generating the second laser beam; Disclosed is a laser device capable of outputting a plurality of laser beams having different wavelengths, including a second laser medium, and a second resonator for generating and outputting a second laser beam by resonating light transmitted from the beam splitting unit.
Description
The present invention relates to a laser device, and more particularly, to a laser device capable of outputting a plurality of laser beams having different wavelengths by using one diode pumping light source.
Nowadays, laser beam is widely used for therapeutic or surgical purposes, and various laser devices capable of outputting a laser beam for each application have been developed and used.
For example, holmium (Ho) lasers are widely used in urology and the like for the treatment of urinary stones and urethral stenosis and for the surgical treatment of benign prostatic hyperplasia, which output a laser beam of a specific wavelength.
Recently, thulium (Tm) lasers have been known for the treatment of benign prostatic hyperplasia as well as holmium lasers. In addition to holmium lasers, thulium lasers can also be useful in surgical fields requiring incision, ablation, and hemostasis .
Both the holmium and thulium lasers are close to each other at a wavelength of about 21 ㎛ and 19 ㎛, respectively, and it is not known exactly which of the two lasers can be used for the same purpose. There is no known.
Therefore, in a company that manufactures a laser device, since users' preferred laser devices may be different, there is a burden to commercialize each product through separate research and development on two types of laser devices.
Meanwhile, as is well known, a laser device for outputting a laser beam includes a pumping source, such as a laser diode, which pumps and emits light, and a pumping light source that resonates pump light applied from the pumping light source, And generates and outputs a laser beam.
The laser resonator has a configuration in which a reflection mirror is disposed on both sides of the laser medium, and amplifies light by reciprocating the laser medium between the reflection mirrors to oscillate the laser beam.
Also, in order to output a laser beam of a desired wavelength in the laser resonator, a laser medium in consideration of an output wavelength must be selected and used. In this case, the pumping light source must also be configured to pump and emit light of a wavelength suitable for the medium of the resonator.
That is, in a laser device for outputting a laser beam of a specific wavelength band, it is required to select a pumping light source and a laser medium considering an output wavelength. Therefore, in order to output a plurality of laser beams having different wavelengths, a separate pumping light source and a laser medium It is necessary to use a separate system.
For example, in order to use the laser beam of 21 mu m wavelength outputted by the holmium laser and the laser beam of 19 mu m wavelength outputted by the thulium laser simultaneously or selectively, it is necessary to construct an independent apparatus having a separate pumping light source and a laser medium.
Therefore, when the user needs to use different laser beams of different wavelengths simultaneously or selectively, it is necessary to provide an independent device capable of outputting laser beams of different wavelengths by using respective pumping light sources and laser medium have.
Also, in the case of a manufacturing company, it is necessary to construct an independent individual device having a pumping light source and a laser medium, or to merely integrate only functions, which leads to a problem of cost increase.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a laser pumping light source that can output a plurality of laser beams having different wavelengths by using one diode pumping light source and a different laser medium, Which can be used simultaneously or selectively, and which can reduce the cost of the apparatus.
According to an aspect of the present invention, there is provided a pumping light source for generating and outputting pump light by pumping light; A first resonator using a first laser medium and generating and outputting a first laser beam by resonating pump light applied from the pumping light source; A beam splitting unit for outputting a part of the first laser beam outputted from the first resonator to the final output beam and outputting the remaining part as pump light for generating the second laser beam; And a second resonator that uses a second laser medium and resonates light transmitted from the beam splitting unit to generate and output a second laser beam.
Here, the first laser medium may be a laser crystal doped with thulium (Tm), and the second laser medium may be a laser crystal doped with holm (Ho).
Preferably, the first laser medium is a Tm: YLF laser crystal and the second laser medium is a Ho: YAG laser crystal.
The pumping light source may be a diode pumping light source including a laser diode, and the first resonator and the second resonator may have a configuration in which a reflection mirror is disposed on both sides of each laser medium.
A Fabry-Perot Etalon device may be disposed on the output side of the first resonator to selectively transmit only a first laser beam having a predetermined wavelength to remove a beam of an unnecessary wavelength band.
And converting the laser beam outputted to at least one of the output side of the beam splitting section where the first laser beam is output to the final output beam and the output side of the second resonator to which the second laser beam is outputted into a pulse- May be arranged.
Here, the converting unit may include a Q-switch for switching the output laser beam.
Accordingly, the laser device of the present invention is configured to output a plurality of laser beams having different wavelengths by using one diode pumping light source and a different laser medium, so that laser beams having different wavelengths can be used simultaneously or selectively Do.
Further, according to the configuration of the present invention, there is an effect that manufacturing cost and cost can be reduced, compared with a configuration using separate pumping light sources for outputting laser beams having different wavelengths.
1 is a configuration diagram showing a laser device according to an embodiment of the present invention.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.
The present invention provides a laser device capable of simultaneously or selectively using laser beams having different wavelengths by being configured to output a plurality of laser beams having different wavelengths by using one diode pumping light source and a different kind of laser medium will be.
1 is a configuration diagram showing a laser device according to an embodiment of the present invention.
The laser device requires a pumping light source that pumps light to generate and output pump light, and as shown, the laser device of the embodiment includes only one
If the
For example, the
The laser device of the embodiment also includes a
Here, the
In the
Also, in the embodiment, a pump light input to the
In the embodiment, Fabry-Perot Etalon (FP), which selectively transmits only a first laser beam of a predetermined wavelength? 1 to remove an unnecessary wavelength band beam at the output side of the
The output of the
Therefore, by arranging the Fabry-
The
Particularly, the
Here, the
The other one of the two
Hereinafter, for the sake of clarity, it is assumed that the
The
In the preferred embodiment, the
A reflection mirror HR (HR) for setting the path of the divided first laser beam to the input side of the
Meanwhile, in the embodiment, the
In the
A converting
In a preferred embodiment, the
The laser device of the present invention generates a laser beam by using the light pumped by the diode
The laser device of the present invention outputs the first laser beam generated from the
1 illustrates a configuration in which two laser beams having different wavelengths (λ 1 , λ 2 ) can be output simultaneously. Although not shown in FIG. 1, for the sake of convenience, the first laser beam and the second laser beam are finally Or an output circuit for selectively outputting only one of the laser beams through switching may be constituted.
In addition, in configuring one laser device by combining the
More specifically, a Tm: YLF laser crystal doped with thulium (Tm) may be used as the
In this case, the first laser beam output from the
In other words, the laser device of the embodiment is an integrated type laser device capable of outputting both a laser beam having a wavelength of 1.9 μm (λ 1 = 1.9 μm) and a laser beam having a wavelength of 2.1 μm (λ 2 = 2.1 μm) A system in which a thulium laser and a holmium laser are integrated into one laser beam outputting a laser beam of a predetermined wavelength, and in particular, a system capable of outputting both a thulium laser beam and a holmium laser beam while using one diode pump light source.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Forms are also included within the scope of the present invention.
10: pumping light source 20: convex collimating lens
30:
33: First laser medium 40: Fabry-Farut etalon element
50: beam splitting section 51: input section
52, 53: output section 54: conversion section
60: reflection mirror 70: second resonator
71, 72: reflection mirror 73: second laser medium
74:
Claims (8)
A first resonator using a first laser medium and generating and outputting a first laser beam by resonating pump light applied from the pumping light source;
A beam splitting unit for outputting a part of the first laser beam outputted from the first resonator to the final output beam and outputting the remaining part as pump light for generating the second laser beam;
A second resonator using a second laser medium and generating and outputting a second laser beam by resonating light transmitted from the beam splitting unit;
And a plurality of laser beams having different wavelengths are output.
Wherein the first laser medium is a laser crystal doped with thulium (Tm), and the second laser medium is a laser crystal doped with holm (Ho).
Wherein the first laser medium is a Tm: YLF laser crystal, and the second laser medium is a Ho: YAG laser crystal.
Wherein the pumping light source is a diode pumping light source including a laser diode.
Wherein the first resonator and the second resonator have a configuration in which a reflection mirror is disposed on both sides of each laser medium.
And a Fabry-Perot Etalon device is disposed at an output side of the first resonator to selectively transmit only a first laser beam having a predetermined wavelength to remove a beam having an unnecessary wavelength band. Of the laser beam.
The laser beam output to the output side of the beam splitting unit in which the first laser beam is output to the final output beam and the output side of the second resonator to which the second laser beam is outputted is converted into a laser beam in pulse form And a plurality of laser beams having different wavelengths are output.
Wherein the conversion unit includes a Q-switch for Q switching the output laser beam.
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KR1020140022293A KR20150101081A (en) | 2014-02-26 | 2014-02-26 | Laser apparatus able to output multiple beams |
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KR1020140022293A KR20150101081A (en) | 2014-02-26 | 2014-02-26 | Laser apparatus able to output multiple beams |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019088530A1 (en) * | 2017-11-01 | 2019-05-09 | 위아코퍼레이션 주식회사 | Apparatus and method for sintering conductive material using laser |
KR20190049429A (en) * | 2017-11-01 | 2019-05-09 | 위아코퍼레이션 주식회사 | Sintering device and method for conductive material using laser |
WO2020111514A1 (en) * | 2018-11-26 | 2020-06-04 | 비손메디칼 주식회사 | Device for emitting thulium and holmium lasers with improved output |
WO2020111515A1 (en) * | 2018-11-26 | 2020-06-04 | 비손메디칼 주식회사 | Dual laser output device having optimized laser coupling efficiency |
WO2021118280A1 (en) * | 2019-12-13 | 2021-06-17 | 주식회사 루트로닉 | Laser apparatus |
-
2014
- 2014-02-26 KR KR1020140022293A patent/KR20150101081A/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019088530A1 (en) * | 2017-11-01 | 2019-05-09 | 위아코퍼레이션 주식회사 | Apparatus and method for sintering conductive material using laser |
KR20190049429A (en) * | 2017-11-01 | 2019-05-09 | 위아코퍼레이션 주식회사 | Sintering device and method for conductive material using laser |
WO2020111514A1 (en) * | 2018-11-26 | 2020-06-04 | 비손메디칼 주식회사 | Device for emitting thulium and holmium lasers with improved output |
WO2020111515A1 (en) * | 2018-11-26 | 2020-06-04 | 비손메디칼 주식회사 | Dual laser output device having optimized laser coupling efficiency |
WO2021118280A1 (en) * | 2019-12-13 | 2021-06-17 | 주식회사 루트로닉 | Laser apparatus |
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